cookie monster

(From the children's TV program "Sesame Street")
Any of a family of early (1970s) hacks reported on TOPS-10,
ITS, Multics and elsewhere that would lock up either the
victim's terminal (on a time-sharing machine) or the
console (on a batch mainframe), repeatedly demanding "I
WANT A COOKIE". The required responses ranged in complexity
from "COOKIE" through "HAVE A COOKIE" and upward.